Our experience with the full-profile excavation of exploratory for tunnel pipes

摘要

The economic development of Slovakia places an emphasis on increasing the quality of transport infrastructure, which requires its modernization residing in building the transport network of international level and improving its efficiency and travel speed. The development of transport in Slovakia has been passing major changes related to the economic and political processes in the country. Regarding the geographical character of the land, the tunnel excavation is an inseparable feature of the road communications modernization. Approximately thirty kilometres of highway tunnels are planned for construction in Slovakia until 2020 and road tunnels should be constructed as well. The first modern highway tunnel Branisko, the longest one (4975 m) in Slovakia was put into operation in 2003 with a preceding excavation of the Branisko exploratory gallery in the course of designed tunnel pipe. The tunnelling works on the exploratory gallery of Vi?ňové tunnel started in January 1999 and finished in the late summer of 2002 due to unfavorable geological conditions. The excavation of a final profile of the Vi?ňové tunnel is planned for 2007. The Horelica tunnel (605 m) near ?adca was finished and put into operation in 2004. The tunnels Lu?ivná (250 m), B?rik (999 m) and Sitina (1440 m) are in construction at present.